Revision as of 11:54, 24 September 2013

Certainly one of the most interesting upcoming technologies for photographers is High Dynamic Range Imaging (HDRI), allowing work with the full real world levels of illumination. While standard image formats utilizes 8 or 16 bits with applied gamma and color space, the HDR image format extends the bit depth up to 96bit in a linear color space.

On this overview we will focus on the currently available GUI-based software packages that are able to create and process HDR images. I want to thank all authors of the respective software packages for their support during the creation of the overview, especially Geraldine Joffre, Andreas Schömann, Paul Nolan, and Thomas Lock. Aside from the windows based GUI packages Bernhard Vogl has evaluated, command line tools are also available and have been added to the table below.

Oloneo® PhotoEngine™ is the only HDR and Raw processing software offering digital photographers full control over light and exposure in real-time. At the core of Oloneo PhotoEngine is a fully real-time, 32-bit floating-point per channel (96-bit per pixel), High Dynamic Range (HDR), ultra-wide gamut, full resolution and non-destructive image-editing engine. Oloneo's color model handles a range of colors that largely surpasses what printers or screens are capable of displaying today. Combined with the suppression of any color shifting and clipping, it guarantees photographers against any loss of image data during the HDR process. A Lightroom plug-in is included.

QT based GUI for pfstools, now including an automatic image alignment. See Qtpfsgui

As you can see,there is a wide variety of fees you have to pay for the different software packages. This is partly justified by the features and the editing functions the various programs offer.

HDR creation and tonemapping

Software

measure camera response curve

create HDR from bracketed images

create HDR from camera RAW image (*1)

tonemap image to LDR

single HDR image creation

batch mode

LDR image alignment

ghost removal

number of different operators

single image via GUI

batch mode

parameters save-/restoreable

panoramic mapping (correct border and zenith/nadir blending)

Artizen

○ (histogram)

√

√

automatic &freehand &numeric

?

√

5+ Builtin Plus 8 more downloadable

√

√

√

√

EasyHDR

√

√

√

√(auto, manual)

√

√

2

√

√

√

○(left/right border only)

FDRTools Basic

√& modify-able histogram

√

○ (via command line)

√

√

2

√

○ (via command line)

–

FDRTools Advanced

√& modify-able histogram

√

○ (via command line)

√

√

√

3 (also supports compression & contrast bracketing)

√

○ (via command line)

–

√

HDRShop

√

√

–

–

–

–

–

–

–

–

–

Oloneo PhotoEngine

√

√

√

√

√

√

4

√

√

√

√(left/right)

HDR Expose

√

√

√

√

√(3 options)

√

16

√

√(batched HDR merge and recipe processing)

√

–

Hugin

√

√

√(via PTBatcher GUI)

√(by standard control points or align_image_stack, also used by LuminanceHDR)

√experimental command line tools deghosting_mask and hugin_hdrmerge with kahn option

-

-

-

-

-

-

Photogenics HDR

–

√(relies on EXIF data)

–

?

?

– (tethered shooting with Canon cameras possible)

3

√

–

–

–

Photomatix Pro

√(selectable)

√

√

√ (selectable)

√

√

2 + 2 LDR blending methods

√

√

√

○(no zenith/nadir possible)

Photoshop

√ (supposedly automatic)

√(relies on EXIF data)

–

√ (selectable)

?

–

4

√

–

√

–

Picturenaut

√(selectable)

√

○ (via command line)

√ (selectable)

?

–

2

√

command line (HDRI2LDRI - adaptive logarithmic only)

√/–(can read MKHDRI-curves)

not necessary, global operator

pfstools

√(pfscalibration, pfstmo with qpfstmo GUI)

√

○ (via command line)

-

-

√

7

√ (qpfstmo)

√

-/– (command line)

–

PTGui Pro

√

√

√ (via Batch Stitcher)

√ (by standard control points)

-

-

1

√

√ (via Batch Stitcher)

√

√

LuminanceHDR

○pfstools calibration can be used

√

√

√

√

√

9

√

√

√

–

*1: Most software relies on DCRaw for RAW conversion. Some cameras with extended DR capabilities are not converted correctly (e.g. Fuji's S3 camera: Although DCRaw could theoretically read all photosensors, it would need one conversion call for every photosite which is not implemented in the tested software packages.)

HDR image manipulation

There are basically 3 types of appications available:

Converter software: This type of software will assist you in generating and tonemapping HDR images

Image editors: These are full-flagged image manipulation programs that will also give you the possibility of HDR generation and tonemapping

Panorama creation programs with the additional possibility of HDR generation and tonemapping

*1: TIFF: 32 bit floating point TIFF. Please note that the TIFF file format is an abstract container for various encoding methods. This may result in incompatibility when exchanging TIFF files between various applications. This is also true to some extent for .hdr files. Though, all applications in this overview use the most recent file format.

UI functionality and large image processing

The best HDR software is not of much use if it lacks of an intuitive user interface. We will now have a look on some key functionality and UI design. We will also have a look if the applications utilize a clever memory management. The test file is a HDR panorama stitched by Hugin with a size of 8000x4000 pixels (32 Mpix), converted to the Radiance (.hdr) format. (This is tested using a standard Windows XP setup w. 1GB of RAM, swapping to HDD allowed)